TY - CONF A1 - Hüsken, Götz A1 - Wagner, L.-C. A1 - Gluth, Gregor A1 - Pirskawetz, Stephan A1 - Kühne, Hans-Carsten T1 - Application of Steel Fibres in Alkali-Activated Mortars N2 - Alkali-activated materials are ideal for the repair of concrete structures in harsh environmental conditions due to their high durability in chemically aggressive environments. However, slag-based mortars, in particular, are prone to shrinkage and associated cracks. In this respect, the application of steel fibres is one solution to reduce the formation of shrinkage induced cracks and to improve post cracking behaviour of these mortars. This study investigated the influence of two different types of steel fibres on the tensile properties of two alkali-activated mortars. Direct tensile tests and single fibre pull-outs were performed to analyse the determining failure modes both on macro and micro scale. Mechanical testing was accompanied by non-destructive testing methods such as digital image correlation and acoustic emission for a detailed analysis of the fracture process. T2 - Local Mechanical Properties - LMP 2019 CY - Prague, Czech Republic DA - 06.11.2019 KW - Alkali-activated materials KW - Fibre pull-out KW - Steel fibres KW - Tensile strength PY - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-509291 UR - https://ojs.cvut.cz/ojs/index.php/APP/article/view/6695 VL - 27 SP - 90 EP - 95 CY - Prague, Czech Republic AN - OPUS4-50929 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -